Someone who is so stupid that they think they are cool. Think that because they hang out with the cool kids at school it makes them cool. Actually the so called "cool kids" have no idea this person exists and are unaware of their existence.

Martin: Hey what happened to Malcolm?
Brant: Oh he's over with the cool kids he's a chamanga now.

(Verb) The act of falling off a horse and sustaining serious life threatening injuries such as becoming a paraplegic. Given the name after the famous actor from the Superman movie series Christopher Reeves.

Dude! Did you hear what happened to Nick on his dream trip to South Africa?
No I didn't what happened?
He did a superman and was in a comma for like more than a month!!